@article{PismaZhETF.97.807,
    title = {On photoionization in the hard $X$-ray region},
    author = {Amusia, M. Ya. and Chernysheva, L. V. and Yarzhemsky, V. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {97},
    issue = {12},
    pages = {807},
    year = {2013},
    doi = {10.7868/S0370274X13120102},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X13120102},
}